US 2022/0033730 A1Published application

Antioxidant mixture for low viscous polyalkylene glycol basestock

AssigneeBASF SE

InventorsMarcel HARHAUSEN, Frank RITTIG, David LEY, Michael ROIDA, Wolfgang SCHROF

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Abstract

The invention relates to a lubricant comprising a polyalkylene glycol basestock, an aromatic amine of the formula (I) as defined hereinafter, and a thioether of the formula (II) as defined hereinafter. The invention further relates to a method for preparing the lubricant comprising the step of contacting the polyalkylene glycol basestock, the aromatic amine of the formula (I), and the thioether of the formula (II); and to a method for reducing the oxidative degradation of the lubricant comprising the step of contacting the polyalkylene glycol basestock, the aromatic amine of the formula (I), and the thioether of the formula (II).

Claims19

Dependent claims

-14. (canceled)

Dependencies are inferred from the claim text.

Facts

Application: 17/297,415Filed 14 Nov 2019
Priority: EP 18208865.828 Nov 2018
Published: 3 Feb 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

C10M 169/04
Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials,…:…
C10M 107/34
Condensation polymers of aldehydes or ketones; Polyesters; Polyethers: polyoxyalkylenes
C10M 133/12
Amines, e.g. polyalkylene polyamines; Quaternary amines: having amino groups bound to a carbon atom of a six-membered aromatic ring
C10M 135/26
Containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms: containing carboxyl groups; Derivatives thereof

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